Improvement in smut-mills



2 Sheets--Sheet I.

E. C. HINZEY. Smut-Mil'ls.

Patented June I6, y1874.

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/lluv UNITED STATES PATENT OFFICE0 ELIAS C. HINZEY, OF IOWA CITY, IOWA,ASSIGNOR TO LOUISA M. HINZEY AND ALFRED JONES, OF SAME PLACE.

IMPROVEMENT IN SMUT-MILLS.

Specification forming part of Letters Patent No. 151,979, dated Juno 16,1874; application filed April 6, 1874.

,To all ywhom 'it may concern:

ment in Smut-Mills; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings forming part of this specification, in which-Figure l is a vertical longitudinal section of my improved machine. Fig.2 is a vertical transverse section of the emery-cylinder and theperforated cylinder in which the smut is removed from the grain. Fig. 3is a section showinghow the emery-cylinder is constructed. Fig. 4 is asimilar section, showing how the perforated jacket which is placedaround the einery-cylinder is constructed. Fig. 5 is an end View of thesmut-mill, showing the blast-fan, spout, and grain-hopper, and spoutleading from it into the blast-spout. i

The nature of my invention consists,f1rst,in the combination of afeeding-screw, an independent and rapidly-revolving emery-cylinder, andan outer perforated and slowly-revolving jacket havingdistributing-blades on its inner circumference, in the mannerhereinafter described. Second, it consists in an extension on thedischarge end ofthe perforated j acket which has lateral openingsthrough it all around, in combination with the grain-discharging hopper,its spout, the blast-pipe, and the fan. Third,

` it con sists in the combination of the hoppers for smut, dust, orscourings with the closed outer casing,the perforated jacket, theemery-cylinder, the feeding-screw, the grain-hopper, the blast orsuction spout, and the fan, in the manner hereinafter described.

To enable others skilled in the art to make and use my invention, I willproceed to describe it.

A represents the frame of the machine; B, an outer tight case, havingonly feed and discharge openings in it, anda remote communication withthel suction or blasting apparatus. C O1 C2 are funnel-shaped dischargehoppers or tubes on the underside of this case. K2 is a suction or blastfan mounted on top of the case near one end, and E an arched suction orblast tube or trunk, arranged laterally to the fau, across the case, andextended down on each side of the frame A. This trunk has a branchspout, E', which 'extends up from the end where the chaff and lightgrain are separated, and connects with the blast-chamber of the fan. Theblast-trunk has valves a a] in one ot' its ends, and a regulatingdischarge-slide, a?, at the other. F is a sheet-metal jacket or easing,formed with strong annular cast-iron heads tied together by throughscrew-rods. This jacket is perforated with oblong narrow slits to.permit the smut and scourings to escape. On the inside of this jacketnarrow radial. ribs or blades F are applied at proper distances apartfor the purpose of uniformly distributing' the grain during theoperation of the machine. 0n the discharge end of the jacket, directlyover the grain-discharge hopper, short extensions F2, composed ofwidely-spaced bars and an annular head, is constructed. 'lhis extensionis outside of the jacket, and it has discharge-openings all round itscircumference. This extension retains the grain momentarily after itcomes from the scouring-chamber, and causes it to be lifted and thrownabout in such manner that the blast has a more perfect effect upon itthan is secured when the grain falls through a stationary slotted bedinto the conducting-tube. The jacket is fitted, by means of hollowjournals, around the shaft of the scouring-cylinder Gr, which is made ofstaves held in form of a cylinder by means of strong metallic heads tiedtogether by through screwrods. The staves are heavily coated with emeryon their outer surfaces. The shaft of the emery-cylinder has its supportin boxes c c, and the tubular journals of the jacket have their bearingsin boxes d d of the frame. Within the long tubular bearing of thejacket, at the feed end ofthe machine, a feed-screw, G', which is on theshaft of the emery-cylinder, revolves freely. At the end of this tubularjournal a hopper with a tubular formation at its lower end is fastenedfirmly upon the frame. The tubular portion ofthe hopper forms acontinuation of the journal, and in it a portion of the thread of thescrew G works. His abranch spout leading from the grain-discharginghopper into the blast-spout. I is a pulley on the hollow journal oftheperforated jacket. J J

are pulleys on the shaft of the emery-cylinder; K, a pulley on the shaftK1 of the fan K2, and L a belt for driving .the shaft from the shaft ofthe emery-cylinder. The emery-cylinder and fan revolve at about the rateof seven hundred to seven hundred and fifty revolutions to twenty totWentyve revolutions of the jacket.

The operation is as follows: Grain is introduced into the hopper,carried by the screw into the jacket between the emery-cylinder and theperforated surface of the jacket, and, as the two cylinders are revolvedat different speeds, it 1s scoured upon the one by the other, being laidevenly along' the whole length of the scouring-surfaces by ribs orstrips of the jacket, and also continually deposited from the jacketupon the emery-cylinder by said ribs. The emery-surface subjects thegrain to the most effectual scouring operation of any other surface withwhich I am familiar, it grinding` oft' the smut and polishing the grainto the nicest degree. As the grain is deprived of smut and foreignmatter, and the said matter is beaten through the slot-s of the jacketand caused to deposit into the hoppers C C', the grain iiows out aroundthe end of the emery-cylinder into the extended open section of thejacket, and falls into the hopper C2, from whence it passes to theblast-spout, where, in its descent, and before it discharges, it issubjected to the blast or suction of the fan. The light grain and chaifrise and pass around the suction or blast tube down on the oppositeside, and here a further separat-ion takes place before the said grainescapes through the valves. The chaff, dust,

and other substances pass through the fan-case into the open air or intoa receiver.

The fan can be set with its blast-nozzle on either side of the machine.At the end of the suction or blast spout where the dust and foreignmatters are separated from light grain, two partial partitions areconstructed, and the chamber between these partitions is always open tothe chamber of the blast or suction spout, and it may be opened more orless to the atmosphere by means of the slide a3. There is also to be, inthe branch suction-spout, a wicket or valve, a4, for regulating theblast.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination of the emery-cylinder, the perforated metal jackethaving ribs on its inner side, and the'feed-screw, the whole constructedand operating substantially as dcscribed.

2. The open-work extension F2, formed on the outside of the perforatedjacket F, at the discharge end thereof, and constructed to revolve withthe same, in combination with the grain-discharging` hopper, its spout,the suc tion-spout, and the fan, substantially as described.

3. The combination of the hoppers for the smut, dust, or scourin gs withthe closed outer casing, the perforated jacket having thelaterally-discharging extension, the emery-cylinder, the feeding-screw,the grain-hopper, the suction or blast spout, and fan, substantially asand for the purpose described.

, ELIAS C. HINZEY.

Witnesses:

J. M. SHEETS, JOHN GLENN.

